Bin Lorry Nina and the Neurons

# If you've got a question and you don't know where to go

# Ask Nina for some help Cos she's got a science show

# She makes sense of her senses While helping all her fans

# By doing her experiments with potions and with bangs

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina and the Neurons find out what you need to know

# Nina and the Neurons find out what you need to know

# Luke, he helps us with our eyes and Felix with our touch

# Ollie sniffs out smells And Belle, she hears so much

# Bud is Ollie's brother He helps us with our taste

# They're Nina's little Neurons And they're coming to your place!

-# Touch your tongue

-Tongue!

-# Fingers

-Fingers!

-# Eyes.

-Eyes!

-Ears.

-Ears!

-Nose.

-Nose!

# Nina and the Neurons find out what you need to know

# Nina and the Neurons find out what you need to know

# Oh yeah! #

Oh, hello there. I'm just decorating some lovely cupcakes.

I'm nearly there. Oh, lemon. My favourite.

BEEPING

I hear a beep, I see a flash, I wonder what they're going to ask.

-ALL: Hi, Nina.

-Hi, guys.

We've got a question for you.

-How does a bin lorry work?

-That's a great question.

How does a bin lorry work? Bin lorries are really useful,

because they take away our rubbish and keep things tidy.

But how do they work?

Why don't you come down to my workshop, and we'll investigate?

ALL: See you soon, Nina. Bye!

Well, I'm going to need some help to answer this one,

and I know just who to ask.

OK, neurons, time to get to work.

ALL: Neurons at the ready, Nina!

OK, today's question is, how does a bin lorry work?

Which neuron do you think would be most useful

in helping us find the answer?

-Me, me!

-Me!

-Me!

Will it be fabulous Felix?

I can help so very much if you need the sense of touch.

Will it be beautiful Belle?

I send messages to brain from ear. If there's a sound, I'll help you hear.

Will it be lovely Luke?

For looking and seeing, day or night,

I'll help you with your sense of sight.

Will it be awesome Ollie?

If it's pongy or whiffy but you can't tell,

-my messages help your sense of smell.

-Or will it be baby Bud?

Sour, salty, bitter or sweet, I'm your taste buddy whenever you eat!

It's Ollie!

ALL: Go, Ollie! Go, Ollie! Go, Ollie! Go, Ollie!

Go, Ollie! Go, Ollie!

Standing by to smell and tell, Nina.

Today's question is, how does a bin lorry work?

Because bin lorries collect all our rubbish,

they can sometimes be a bit whiffy.

So, Ollie, our smell neuron, will be helping.

Right, I need to get the workshop ready before the engineers arrive.

Heidi loves monkeys.

Sam likes playing tennis.

Molly loves cooking.

I've seen lots of bin lorries.

It empties the bins into the back of the truck.

So, today, for one day only, Heidi, Sam and Molly become the engineers!

-Hi, guys.

-Hi, Nina!

Welcome to my workshop, and thanks for your great question,

how does a bin lorry work?

So, to find out how a bin lorry works,

we're going to start by using our senses.

ALL: Woo-hoo! A senses experiment! We're ready, Nina!

In these bins is our pretend rubbish, and these are our big

pretend bin lorries ready to take the rubbish away. Let's have a look.

The bins are quite full.

-So, do you think it's time to empty them into the bin lorries?

-Yes.

OK, now, Heidi, I'd like you to empty the rubbish

from the blue bin, one piece at a time, into this blue bin lorry.

And, Molly, I'd like you to lift the red bin upside down to empty

it into the back of the red lorry.

Now, these bins are really light, so it's OK for us to lift them.

But you should never try to lift heavy things on your own.

Always ask a grown-up for help.

And, Samuel, you and I, we're going to be the bin lorries.

We're going to scoop up the rubbish as it arrives

into the back of our truck.

I wonder which will be the quickest way to empty the bins.

So, are you ready? Three, two, one, go!

Wow, lifting up the bin to empty it was really speedy. They've finished!

Nina? I think someone is waiting for you.

You're right, Felix, you two must've emptied your bin really fast.

So, tipping up a bin to empty it is much quicker than emptying it

one piece at a time. Now, let's see how our toy bin lorry works.

Here's the bin at the back,

and it lifts and tips the rubbish into the back of the bin lorry.

And we know from our experiment that that's the best way to get

the rubbish into a lorry really quickly.

How does a real bin lorry lift up bins?

That's a great question.

To find out, we'll have to go somewhere that's a bit noisy.

-Let's go, engineers!

-Yay!

I wonder where Nina is taking us.

She said it's somewhere a bit noisy.

-Maybe it's a party, they're noisy!

-Sorry, Bud.

-This doesn't look like a party to me.

-We'll soon find out, neurons.

We've arrived!

You asked, how does a bin lorry work? So we've come here to see one.

Gosh, Nina, there are so many different smells here.

Yes, Ollie, it is a little bit whiffy. OK, guys, on you go!

Bin lorries are very noisy!

Did you see how the lorry lifted the bins to empty the rubbish?

Just like we did in the workshop.

So, how does a bin lorry lift all that heavy rubbish?

Well, it uses one of those.

-Those are called pistons.

-I say, what's it called, Nina?

It's a piston, Felix. It's called a piston.

Let me show you how it works. Come with me!

I use these to decorate cakes with icing,

but they are a lot like the pistons in a bin lorry.

If I push this end, the icing is pushed out the other end.

I love the taste of icing!

-Especially when it's on top of a cake!

-Well done, guys.

Our pistons had icing in them,

but the pistons in a bin lorry have oil inside them.

Oil is a thick, gloopy liquid that is used in machines

to help them work more smoothly. Have a look at this.

Now, these two pistons are just like the ones we've been playing with,

but they are connected with a tube.

Molly, can you hold this for me, please? That's it, excellent.

Now, I'm going to push this piston.

-It's going to come into here.

-Wow, clever engineering.

-What's happening?

-It's pushing up the other piston.

-That's right.

And, Molly, if you push the other piston down, we'll see

if it works the other way.

It worked!

When the icing gets pushed out of one piston,

it goes through the tube and into the other piston.

Push one piston down and the other one is pushed up.

But real pistons like the ones in the bin lorry have oil inside them.

When one piston is pushed down, the other piston is pushed up,

and it's pistons in a bin lorry that help lift the rubbish into the back.

Bigger pistons can lift bigger things,

and I know somewhere we can visit where there are giant pistons.

So let's go, engineers!

Now, we're going to see how giant sized pistons can lift very,

very heavy things. We're here at the Thames Barrier.

Engineers built this to stop London flooding.

It has gates to stop the water in the river from getting too high.

But these gates are really, really heavy.

-So, can you guess what engineers use to lift up the gates?

-Pistons.

That's right, pistons! So, let's watch them working.

I want to see this too, Nina.

There are giant pistons in the Thames Barrier.

These pistons lift the heavy gates up above the water.

Looking at these giant pistons has given me

an idea for one final experiment, so come with me.

So, we know that pistons can move really heavy things,

like the Thames Barrier.

For this experiment, first of all, I'm going to try

and move this brick using my hands.

Sorry, Nina, that feels very heavy.

You're right, Felix, I needed two hands to lift that.

Engineers, do you think I can lift this brick using just one hand?

ALL: No!

Well, what about if I had help from a piston?

Now, remember the pistons we had earlier?

These pistons are similar, but one of them is long and thin

and the other one is short and wide.

And they are connected by a tube with some green oil inside.

Now, I'm going to try pushing the thin piston down with just my hand.

Yay, it worked!

The oil was pushed out of the thin piston

and could only go along the tube and into the wide piston.

The wide piston was pushed up, even though there is a heavy

brick on top of it.

A little push on the thin piston became a big push on the wide

piston because the oil was more spread out.

That lifted the heavy brick.

Pistons in bin lorries and the Thames barrier work

just like this to lift heavy bins or heavy gates.

This shows us how clever engineering is.

It helps us to lift something really heavy, even if

we can't lift it by ourselves.

Your question was, how does a bin lorry work?

And I think we've answered it.

We discovered that bin lorries use pistons to lift bins

and tip out their rubbish.

Pistons are connected to each other using a tube with oil inside it.

If you press down the piston at one end,

it moves the piston at the other end of the tube.

We also discovered that if you push down a long, thin piston,

it can push up a short, wide piston

that can lift something really, really heavy.

-So, I hope that answered your question.

-ALL: Thanks, Nina!

# Nina and the neurons! #

If you want to know more about the science and engineering that is

all around us, visit the Nina section on the CBeebies website.

Have fun!

Pulling, pushing, twisting, mixing, drilling, squeezing, loading!

# Go engineering

ALL: # Go engineering

# When you need to fly it, make it, shape it

# Go engineering

ALL: # Go engineering

# When you want to build, go engineering

# Engineering!

# When you've got to solve a problem

# But you don't have to do it

# It's time to go engineering

# Engineering

# When you want to lift it, stick it, pump it, bend it

# It's time to go engineering

# Engineering

# Go engineering

ALL: # Go engineering

# When you need to fly it, make it, shape it

# Engineering

# Go engineering

ALL: # Go engineering

# When you want to build, go engineering. #

Go engineering!

I've really enjoyed myself today. There were so many different smells.

I've had a fab day. I even learnt a new word. Piston!

It's been a marvellous day.

Who'd have thought just a little touch can move such heavy beings?

And remember, engineers help to build the world around us.

They make things work and use science to solve problems.

See you again soon. Bye!

ALL: Bye!

Go engineering!